My suggestion is: 1. You should borrow a book about computer network from the library to learn network technology, which has a relative foundation. It is best to read Tsinghua's books.

2。 Buy a copy of Cisco's CCNA and study hard. In the process of learning, install a virtual machine on the computer and do experiments in a virtual network environment. Learning and practice have made rapid progress.

3。 You should also learn the system management of windows server, such as AD, DNS, mail, UP SERVER and so on. It is best to know something about Linux.

4。 You might need a certificate or something. You can take CCNA, msce or national network administrator certificate. Is the certificate a stepping stone,

5。 I also know about printers, copiers, projectors and computer maintenance.

If you have all the above knowledge, I can guarantee that your salary will not be less than 3000. Then you can mix some experience and learn project management and ERP. Then you sent it!